Fig. 20From: Extraction of niclosamide from commercial approved tablets into aqueous buffered solution creates potentially approvable oral and nasal sprays against COVID-19 and other respiratory infectionsDissolution of Yomesan-niclosamide at 1 L scale showing the increasing yellowness of the solution as the niclosamide dissolves over a period of 0–180 min. Far right, the filtered 1 L sample of 165 µM niclosamide in final pH 9.33Back to article page